Digital audio output s pdif. Spdif input out. Wonder what "Spdif" is in other dictionaries. Retail media players. Placement of components on the board

Vinyl programmers

Digital sound

S/PDIF digital interface and yoga robotic principle

Digital Exit.

Nest on all CD transports and on any CD-programmers that secures access to the digital data stream. For additional digital output, a CD transport can feed information to an ocremy digital processor via the S/PDIF interface (Sony/Philips Digital Interface Format) digital interface Sony/Philips). Yogo is named after the two companies that made the CD.

Digital interface S/PDIF is a standard format for transmitting digital audio, most importantly between CD transport and a digital processor. The S/PDIF signal can be transmitted via plugs and cables different types, such as optical ST or coaxial (look at each other below). All per-bottom digital audio equipment - transport, digital processor and digital recording equipment - S/PDIF interface. The professional version of S / PDIF is called the AES / EBU interface (Audio Engineering Society / European Broadcast Union, or the Association of Audio Engineers / European Radio Union - organizations that standardized this interface). Some yogi vicorists also work in digital audio equipment.

jitter- timely pardon of the clock generator, which sets the moment for the transformation of digital CDs for music. The jitter is also fading into space, changing the depth of the sound stage and sweeping musical images. Seeing the clarity of the future, you know that Vikonavtsy, the expanse of the sky will be tightened with a serpentine.

The main source of jitter in digital audio is the interface that CD-transport comes from a digital processor. Take advantage of the digital interface, which, by its nature, allows a CD-programmer, and you will find the jitter alarm clock. Because of this, one-case CD-programmers for other equal minds may be more important than sound over component equipment.

The S/PDIF signal has audio data from both audio channels, as well as a sync signal, ranks of clock pulses. The number of clock pulses controls the digital processor, which is why the transport and the processor work on a single clock basis. The indicator with the inscription "Lock" or the sampling rate indicator on the front panel of some digital processors shows that the clock pulses are responsible for the two synchronization components, that is. x clock frequency run away.

The flow of data to the S/PDIF interface carried both sound information and service information, including a number of CD subcodes. Don't worry about the sampling rate, the compromise, as well as information about the validity of the signal to the professional AES / EBU interface or to the interface for the S / PDIF bit-by-bit equipment. Given a subcode, include the numbers of all tracks and time information, which is displayed by the indicator of the CD-programmer or transport. Sound data and subcode information are combined in 32 bit bits. The skin subframe is based on the preamble, which is a bit sync group, which violates the rules of biphasic coding. The preamble is a synchronization signal, which means the beginning of a new subframe. The preamble is followed by some additional information” 20 categories of audio information. If sixteen-digit sound information is transmitted, then the additional chotiri are not reversed (they are replaced by zeros for the hour). Chotiryohbitna area of ​​additional data can be twisted for placement of sound data, increasing for її rahunok the whole length of the word of audio data up to 24 beats.

Added chotiri bits (correctness of the sound signal, bit of data of the coristuvacha, the status of the audio channel and the parity of the subframe) complete the subframe.

The subframes of the left and right audio channels are identified by different preambles. In a single sweat of battles, the stench is transmitted through the earth. Three subframes are formed blocks of 192 bits. With a sampling rate of 44.1 kHz, the speed of the digital stream becomes 2.8224 million bits per second.

S/PDIF or S/P-DIF- decrypted like Sony/Philips Digital Interface Format, but yak Sony/Philips Digital Interconnect Format described as IEC 958 type II according to the international standard IEC-60958. Sukupnistyu specifikatsiyu low level protocol and hardware implementation that describe the transmission of digital audio between various components audio equipment. When describing S / PDIF, it is necessary to describe both the physical part (what, how, in what order the signal is transmitted and why), and the program part (this is how the protocol is broken).

S / P-DIF AES/EBU; There may be small details in the protocol, but at the expense of less expensive equipment.

Programs

Otherwise, stop the S / PDIF interface to know when transmitting a digital stream of necessary sound, as specified by the IEC 61937 standard. sound.

S/PDIF (Sony*/Philips* Digital Interface) is an interface to the audio transmission format, which supports the transmission of digital audio signals from one device to another without the procedure of converting to an analog signal, which allows the loss of sound quality.

Nest RCA- the widest rose, which is victorious with the S/PDIF interface, and the identical rose, which is found in modern audio products. In addition, in some vipadkas there is an optical rose. To connect the audio system directly to the speakers, the rest must be connected to the S/PDIF input.

If the motherboard for desktop PCs does not support S/PDIF sockets, you can install a sound card, as well as include all sockets.

Hardware implementation

S/PDIF formatting is based on the professional audio industry standard known as AES/EBU, which is used for digital recording on a magnetic line in DAT systems and audio transmission in professional recording studios. S / PDIF is rich in what is identical to the protocol, but may be other physical differences, as on the other hand, XLR is cheaper and lighter in vikoristanny.

Tipi roses and cables

• Digital signal from TTL equals. TTL - transistor-transistor logic. TTL sound (but don’t start!) May be two equal: > 2.4 V (one) and 0-0.4 V (zero). TTL S/PDIF also available sound cards Oh.
• Coaxial. Coaxial cable with support 75 Ohm, up to RCA plugs. Primary audio cables (tulips) can be twisted for S/PDIF signal transmission on short distances (up to 0.5 m), for longer distances a 75 ohm coaxial cable is required. On the roses from the skin side, 75 ohm terminating resistors are installed. Without navantage resistors, the voltage difference is ±0.5V with resistors ±0.25V.
• TOSLINK - fiber optic cable. At the same time, roses of the MiniTOSLINK type rose to great popularity - a rose of an optical cable in a 3.5 jack form factor. Even more often such roses are heard on modern laptops, deactivating S / PDIF confusion from the output to the headphones. To connect such a laptop with the receiver, you need a MiniTOSLINK - TOSLINK cable or an adapter for a standard TOSLINK-TOSLINK cable.

Protocol

The low level protocol may be the same as in the AES/EBU inventory. The only identity is the channel status bit (“Channel status bit”).

S/P-DIF channel status bit

For SPDIF, 192-bit words are subdivided by 12 lines of 16 bits per skin. The first 6 bits of the first word - a key code; the meaning of these battles is shown in the table:

More

A leather music lover, a kind of future audio system based on a PC from the zastosuvannya zovnіshny DAC, zmusheniya itself in the opinion, it would be used, insignificant, but the main one in practice nutrition. USB or SPDIF connection? Let's try to put all the specks over the "i" once and for all!

That marvelous, more fantastic at that time, the brainchild of the scientific progress of the 1980s, SPDIF, is still relevant. As a semi-professional switching standard in digital recording studios, it has taken the ticket to life within home systems. Then why is the secret of this "optics"?

The truth is, there is no secret here. We all know that the transfer of data is light, including the possibility of direct competition. Such a standard allows, in practice, to completely turn off the digital signal such an unbelievable sight, like a jitter. Jitter is to blame for this change, as between a digital signal and a digital signal, we take it to get the minimum synchronization behind the frequency. That way, if you see a signal with a higher frequency, it’s better to accept it later, then the jitter on the left side of the wine is, apparently, the need for resampling the signal in order to be able to convert it. SPDIF will help relieve such a shortfall. Aje in the new sampling frequency, insert the dzherelo. The receiver of the building will convert the signal practically with any frequency available to the dzherel. For this reason, the DAC, which is connected via SPDIF, can process the digital audio signal with parameters 24/192 without downsampling.

Butt of reference signal transmission by "optics"

You can't boast about the USB Audio v.1 format. Unfortunately, attachments that work with such a standard do not often build a signal with characteristics higher than 16/48. І let the documentation to the standard be 24/96, but in practice, find the operating Windows system primus (!) reduces the value of the output signal to 16/48 when connected to a PC audio device, created on the basis of the protocol. On the right, in that the protocol is divided and certified in 1998, it is synchronous. What does it mean? It really means those that before the cob of transmission of a digital signal, the dzherelo and the receiver “domovlyayutsya” among themselves about those with which frequency the transmission is to be made. Tsya frequency is overridden by a constant transmission signal. So for one and the same interval of an hour through the primus "survival" of the frequency, there can be transmissions of absolutely different data. With a little help, you can get around without any problems, but even if the advancing milisecond is new, if you move ahead, you can get tighter and tighter. And tse to bring to the inevitable wasted part of the details of the sound track, creating those other minor traces. Tobto about Hi-Fi say no more.

The Viconan USB Audio 1.0 has the same signal. Sumne visionary

Situation maw fix USB Audio v.2. You can now use the asynchronous mode of operation, which by itself is practical to turn off jitter again. Introductions in 2009 Robotic USB 2.0 chi 3.0. I, obviously, insane with the previous DAC releases. Prote yakіsny sound help the victims :). In practice, the reliability of a signal transmitted via USB Audio 2.0 is not the same as with SPDIF/Toslink. In this rank, DACs and modern sound cards, released after 2009, will support USB Audio 2.0 as hardware, as well as on equal drivers, to ensure the quality of the sound, which is not affected by optics. For the sake of justice, designate what draver, yak it will take care of USB support Audio v.2 can't be found right out of the box in Windows 10. The first task of its development lies on the shoulders of the makers of modern sound cards and DACs. And the stink of your devil can cope with it as a whole.

USB Audio 2.0 Async work wonders

The choice of connection method is now based on special advantages, and not the technical advantage of one format over another. P To that, the assertion about those that “optics” is better than USB, today is a myth, I want to expand it. See you later!

P.S. Illustrations, taken in ideal minds and on reference equipment, taken from the materials of the resource

Wrapper USB cable 120cm

1M eyelash optical cable

The ends are closed with humic zahisniy caps.

Roz'єm standard SPDIF with beveled folds.
Some of you, like me, sometimes played on TVs and other computers, but they didn’t win, so you’ll know what kind of animal.

Use the fiber optic, which is light for one day of taxation - you can take it for another day.

І, nareshti, the converter itself is a metal box with roses on both sides.

From one side enter: life and digital sound, either through an optical Toslink cable like we have, or through coaxial.

Come out from the other side: earphones 3.5mm, two Tulip RCA that indicator of liveliness, chervoniy and dosit cores.

Converter dimensions are small: 5.5cm * 6cm * 2cm
Ale wine to finish an important zavdyak to the metal case: 82g

The converter is easily disassembled, it is enough to twist the screw.

And then two more and ready:

At the back, as if the troch was inaccurately crushed, the soldering with the pieces was negligible, the bottom was not swept away by the flux.
I give close-up pictures:
http://s19.postimg.org/42zggy8tv/audio_converter_19.jpg
http://s19.postimg.org/bmsjj020j/audio_converter_20.jpg
http://s19.postimg.org/o05dpwroz/audio_converter_21.jpg
http://s19.postimg.org/fkft8eotv/audio_converter_22.jpg

Well, let's connect.
Connecting to dissimilarity is simple, insert the necessary rods where required and power from the USB of the TV itself.
Virviglazed indicator, straight mini lighter.

It’s better to turn it to the side of the wall, or we’ll glue it, since if the TB is broken, then it’s the fault.
On a TV set, you can select the sound where you want to play the sound, on Samsung you can most easily use the sound button through the button.

If the audio output is selected as in the screenshot, then the sound of the TV itself is no longer available, but when you try to adjust the volume, write about those that have been adjusted to the sound of the speakers and now you can adjust the sound with the remote control for them.

It is possible that the sound does not permikat on zvnishnі, stink and so roar zavzhd like only built-in, then gratimut simultaneously and ovnіshnі dynamіkі, i vnutrіshnі, moreover, in rich vipadkah time the moon in an hour of converting figures into analogue, such an effect of the hall.
You can work Mute on the speakers, or change their volume to zero, so that the icon of the mute speaker does not jump to the side.
Ale, when looking at rich-channel films, it is better to vikoristovuvat and ti, and іnshi columns, the TV is good at transmitting the middle frequencies - mov, music. the center plays the role of a sub and gives special effects.
When working, the converter heats up a little.

I don’t have a professional microphone, so I’ve done everything I can, for the help of a great camcorder, to convey to you the difference in the sound of those sound speakers.
Really different prices, lower on the video.
You need bass headphones or speakers, so you can feel a little difference, in laptop speakers or floor-mounted plastic tweeters, you are unlikely to be different.

Tse everything, for the respect of all.

Compilers of modern models of televisions could make sure that the audio signal that appears is clear and loud. But not all vlasniks in the state standard sound and blame the need for sound on the outside media, for example, a home cinema.

S/PDIF international standard transmission of digital audio. The transfer of data is carried out for the help of a number of cables and roses. The hand of yoga was victorious in audio players. But the technology began to develop and S / PDIF-mode appeared on home cinemas, car stereos, personal computers and current models televisions.

What is S / PDIF on TV

A digital or optical S/PDIF socket on the TV is necessary for the transmission of the audio signal in the audio format. Even though a movie is being broadcast on a TV or a transmission in HD-quality and an attachment supports the 5.1 format, the sound will be output from the TV in a digital or optical format. On current models of the TV set, sound the representations of the roz'emu Toslink chi coaxial.

Tipi standard S/PDIF

S/PDIF technology has two types of signal transmission: coaxial and optical.

1. Coaxial exit. Irrespective of those who are given the option of transmitting an audio signal already available in the past, such as Internet providers and postal employees cable television still yoga vikoristovuyut. Also, this rose is present at home cinemas, video and audio players and car radios. Vіn ensures the transmission of sound from digital quality between digital equipment. Sob it was possible, it is necessary to connect an attachment between yourself for help coaxial cable. The digital rosette can transmit rich channel or stereo sound without degrading the audio signal's brightness. This connection option is inexpensive. Ale, even if nearby, there is an electromagnetic field, the quality of the sound is greatly reduced.
2. toslink. At the moment, through this rose, it is possible to connect the TV to outbuildings sound transmission. This is the optical interface, the building signal, which is not weak to the splendid infusion. To connect a media system to a TV receiver for additional optical output, a fiber optic cable is required. As if vikoristovuetsya yakіsny provіd, z'ednannya mizh equipment will be superior, and the sound will be ideal. Televisions and media systems that are released at the same time, have an optical interface. When choosing, it is necessary to check the characteristics of the outbuildings that are connected, as well as what kind of roses. The very procedure for connecting and completing the connection is simple. Behind the auxiliary cable, you need to connect all the extensions, and in the sound settings of the TV, you need to know the Dynamics item and select External speakers.

Why do you need S/PDIF

The S/PDIF interface of Sony/Philips is also expandable. This is a standard channel for transmitting a digital audio signal between equipment. Vіn is also compact and є the only technology for transmitting the sound of a completely stable to a splendid infusion and different transitions, which allows you to safely sound like a sound.

DOVIDKA! The S/PDIF mode is ideal for stereo surround sound, allowing you to enjoy audio or video files.

Such roses can be shown on televisions, media devices, motherboards personal computers high capacity between different digital equipment, krim obov'yazkovoї procedures for converting a digital signal into an analog one.

With the connection of various media devices behind the help of this interface, you can fully enjoy the sound in 5.1 format. Especially the wine is relevant, if there is no possibility to connect the equipment behind the auxiliary cable and the HDMI socket.

Tsya technology is already popular with televisions. Connections and connections take up quite a bit of time, the intensity of the coristuvach takes away the best sound.